The Content Variation of Four Active Components in Amygdalus persica L. during Different Harvesting Periods

Table 2

Regression equation and linear range of four active ingredients.

Components	Regression equation	R ^2	Linear range/(μg)
Rutin	y = 33772x − 13189	0.9998	0.0682∼0.5456
5-O-Coumaroylquinic acid methyl ester	y = 79565x − 1669	0.9996	0.0708∼0.5664
Chlorogenic acid butyl ester	y = 32987x − 31325	0.9999	0.0930∼0.7440
Kaempferol	y = 52143x − 65703	0.9995	0.0742∼0.5936